Get the MarineRadar appSatellite AISSatellite live trackingTrack any shipLive alerts112,000+ ships trackedDownload free

Ihota Kō Lighthouse

Fl R 4s🇯🇵Yamaguchi, JPOperational

Location & Light Range

About Ihota Kō Lighthouse

Ihōta Kō is an operational lighthouse situated in Yamaguchi. Its focal height reaches 13 meters above sea level. The light it emits is red, displaying a single red flash every 4 seconds. This lighthouse has a geographic range of 5 nautical miles.

Light & Optic

Characteristic Signature
Fl R 4s
Flash Type
Flashing
Light Color
Red
Flash Count
1 flash
Interval
4s
Raw Code
Fl.R. period 4s
Focal Height
13m
Geographic Range
5NM

References & Identifiers

Admiralty No.
M5657
NGA No.
9108

Location

City
Yamaguchi
Country
🇯🇵JP
Latitude
33.9451°
Longitude
132.4379°

Nearby Vessels

Flag
Type
Name
Dist.
Live tracking · 50,000+ mariners

Find Ihota Kō Lighthouse on the live nautical map

Plan voyages near JP, see nearby vessels in real time, and explore 14,900+ navigation aids in the app.

Nautical mapNearby vesselsVoyage planning
Get the App

Frequently Asked Questions

How do mariners identify Ihota Kō Lighthouse at night?+
Ihota Kō displays the characteristic Fl R 4s — 1 red flash every 4 seconds. Each lighthouse has a unique flash pattern published in the List of Lights, allowing mariners to positively identify it and distinguish it from other navigation aids in the area. The red color may indicate a specific sector or warning zone.
Which ports and harbors does Ihota Kō Lighthouse guide vessels into?+
Ihota Kō Lighthouse assists vessels approaching 5 nearby ports. The closest is Ihota at 0.2 NM to the NNW. Other ports served include Kuka (8.9 NM W), Tainouchi (11.6 NM NNE), Osako (12.1 NM NE), Ryohshida (12.2 NM NNE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Ihota Kō Lighthouse still active and maintained?+
Yes, Ihota Kō Lighthouse is currently operational. It is actively maintained and continues to emit its characteristic light signal for marine navigation. Most modern lighthouses are automated and monitored remotely by the national maritime authority.
What shipping routes pass near Ihota Kō Lighthouse?+
Ihota Kō Lighthouse is located within the Japan / Korea shipping lane — a busy shipping corridor linking the major ports of Japan and South Korea. This makes it an important navigation reference for commercial shipping traffic in the region.
How can I track vessels near Ihota Kō Lighthouse?+
You can track vessels near Ihota Kō Lighthouse in real time using MarineRadar. The platform shows live AIS positions of ships in the area, including vessel name, type, flag, speed, and course. Use the "Track Vessels Nearby" button on this page to open the live map centered on this lighthouse.